Aspherical thermocouple junction is used for temperature measurement in a gas stream. the junction has a diameter of 0.5 mm, k = 35 w/m k, c = 320 j/kg k, and rho = 8500 kg/m3. the convection coefficient between the junction surface and the gas is h = 2.2(v/d)0.5 , and the time for the junction to reach 99% of the initial temperature difference is 5s. what flow velocity can the thermocouple be used for?

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.